I was watching the stream that was presenting the new particle effects. They are great! I can’t wait to use them, however, I feel it would be nice to have Z-Index option for the Instance.
Why? Particles are messed up when they come into contact with Surface Gui’s or Billboard Gui’s. Not cool. 
That is expected as BillboardGui and SurfaceGui instances are rendered after the world is.
Really? Does it calculate what portion of the GUI should be seen? Because blocks can still be in front of a BillboardGui. Just wondering how it works.
Really? Does it calculate what portion of the GUI should be seen? Because blocks can still be in front of a BillboardGui. Just wondering how it works.[/quote]
It more than likely takes the Z buffer of the world into account when drawing them.